migration: T6007: convert all migration scripts to load as module

(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)

1 files changed, 19 insertions, 39 deletions

diff --git a/src/migration-scripts/policy/7-to-8 b/src/migration-scripts/policy/7-to-8
index 73eece1a6..a887f37fe 100755..100644
--- a/src/migration-scripts/policy/7-to-8
+++ b/src/migration-scripts/policy/7-to-8
@@ -1,18 +1,17 @@
-#!/usr/bin/env python3
+# Copyright 2023-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 or later as
-# published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful,
+# This library is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
 #
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 # T5834: Rename 'enable-default-log' to 'default-log'
 # From
@@ -20,37 +19,18 @@
 # To
     # set policy [route | route 6] <route> default-log
 
-from sys import argv
-from sys import exit
-
 from vyos.configtree import ConfigTree
 
-if len(argv) < 2:
-    print("Must specify file name!")
-    exit(1)
-
-file_name = argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
 base = ['policy']
-config = ConfigTree(config_file)
-
-if not config.exists(base):
-    # Nothing to do
-    exit(0)
 
-for family in ['route', 'route6']:
-    if config.exists(base + [family]):
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
 
-        for policy_name in config.list_nodes(base + [family]):
-            if config.exists(base + [family, policy_name, 'enable-default-log']):
-                config.rename(base + [family, policy_name, 'enable-default-log'], 'default-log')
+    for family in ['route', 'route6']:
+        if config.exists(base + [family]):
 
-try:
-    with open(file_name, 'w') as f:
-        f.write(config.to_string())
-except OSError as e:
-    print("Failed to save the modified config: {}".format(e))
-    exit(1)
+            for policy_name in config.list_nodes(base + [family]):
+                if config.exists(base + [family, policy_name, 'enable-default-log']):
+                    config.rename(base + [family, policy_name, 'enable-default-log'], 'default-log')